package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.util.Date;
import java.util.List;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String password = employeeLoginDTO.getPassword();

        // 1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(employeeLoginDTO.getUsername());

        // 2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            // 账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        // 密码比对
        // 需要进行md5加密，然后再进行比对
        password = DigestUtils.md5DigestAsHex(password.getBytes());
        if (!password.equals(employee.getPassword())) {
            // 密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            // 账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        // 3、返回实体对象
        return employee;
    }

    @Override
    public void save(EmployeeDTO employeeDTO) {
        Employee employee = new Employee();
        BeanUtils.copyProperties(employeeDTO, employee);
        employee.setStatus(StatusConstant.ENABLE);
        // md5加密 默认密码都是123456 后期修改密码
        String password = DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes());
        employee.setPassword(password);
        employee.setCreateTime(new Date());
        employee.setUpdateTime(new Date());
        employee.setCreateUser(BaseContext.getEmpID());
        employee.setUpdateUser(BaseContext.getEmpID());
        employeeMapper.insert(employee);
    }

    @Override
    public PageResult list(EmployeePageQueryDTO employeePageQueryDTO) {
        Page<Object> result = PageHelper.startPage(employeePageQueryDTO.getPage(), employeePageQueryDTO.getPageSize());
        List<Employee> list =employeeMapper.list(employeePageQueryDTO.getName());
        return new PageResult(result.getTotal(),list);
    }

    @Override
    public Integer startOrStop(Integer status, Long id) {
        Employee employee = new Employee();
        employee.setId(id);
        employee.setStatus(status);
        return employeeMapper.updateById(employee);
    }

    @Override
    public Employee getById(Long id) {
        return employeeMapper.selectById(id);
    }

    @Override
    public int updateById(Employee employee) {
       return employeeMapper.updateById(employee);
    }
}
